We have tried several models, but by far the best one has been Jail Bird model from Mature Metal. It's custom made, and can be fit with a security-screw, rather than a padlock. This provides maximum comfort and discretion, which means that it can be worn close to permanently (of course it will have to come off for cleaning). A common mistake is that the cage is too big. The man should be measured when flaccid - many times, to make sure you got a correct fit. If its too small, it will be unbearable, if its too big, the penis will scratch against the cage when getting hard, also providing discomfort. You can easily Google how to find a correct fit for mature metal models.
In our experience, only custom made metal cages work as intended, rest is garbage, dont even bother honestly.
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